| Position: | Defence |
| Shoots: | Left |
| Height M: | 1.86 |
| Weight Kg: | 87 |
| Team: | Hannover Scorpions |
| Former Teams: | Lukko (FIN) HPK (FIN) HC Ambri-Piotta (NLA) HC Thurgau (NLB) SCL Tigers (NLA) HC Davos (NLA) Linköpings HC (SEL) Frölunda HC (SEL) |
| League: | DEL |
| Birth Date: | November 29, 1972 |
| Birth Place: | Gothenburg, Sweden |
| Career Start: | 1990 |
Oscar Fredrik Ackeström (born November 29, 1972, in Gothenburg, Sweden) is a retired professional Swedish ice hockey player. In 2009 he was a defenseman for the Hannover Scorpions in the Deutsche Eishockey Liga.[1]